Visual Speech Aid

A visual speech aid is an assistive device or system that converts auditory speech information into visual form to help individuals with hearing impairments follow spoken conversation. These aids may display text (as in captioning systems), phonetic symbols, lip-shape cues, spectral information, or other visual encodings of speech sounds. Visual speech aids are designed to supplement lipreading and residual hearing, providing additional channels of information that make spoken communication more accessible for deaf and hard of hearing users.